for motorcycle insurance. geico, see how much you could save. >>> tonight, a story you will not see anywhere else. >>> tonight, a story you will not see anywhere else. for the first time, cnn's arwa damon talks about what she experienced when she first set foot inside the american compound in benghazi. what the terrible scene was like after the deadly assault that killed four americans. evidence she saw that might have been useful to investigators. that is, had investigators ever had a chance to stand where she stood. indications perhaps that might help locate the culprits. keeping them honest, nearly everyone and anyone has now been able to gain access to the crime scene, except, that is, for fbi agents and now for them, it's no longer worth taking the risk to going to benghazi. but there is at least some indication tonight that enough is known about who did this to begin planning some kind of response. a senior american official telling us that the pentagon and intelligence community have begun preparing so-called target packages, detailed information that can be used to capture or kill some of